Consider following statements- (A) Work done by pseudo force in non-inertial \( \mathrm{P} \) fr...

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Consider following statements-
(A) Work done by pseudo force in non-inertial
\( \mathrm{P} \) frame itself cannot be positive

W
(B) Net work done by static friction on the system (consisting surfaces in contact) is always zero
(C) Net work done by Kinetic friction on the system (consisting surfaces in contact) may be positive
(D) Work done by kinetic friction on a body may be positive
Select correct alternative :-
(1) A, B and C
(2) B and D
(3) A, B and D
(4) A, B, C and D
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